CV90 disc seal triode. Note, the camera lens does distort this slightly but the base really is warped like that!
Designed for use as a local oscillator in a double concentric co-axial line, this valve could operate up to 3GHz, and generated 4W output at 1GHz. It was replaced by the smaller CV273.
This file was last modified
10:48:22, Thursday April 14, 2022